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USGS Daily Statistics for the Nation

The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 06479500 BIG SIOUX RIVER AT WATERTOWN,SD


Codington County, South Dakota
Hydrologic Unit Code 10170201
Latitude  44°56'33", Longitude  97°08'45" NAD27
Drainage area 806  square miles
Contributing drainage area 357  square miles
Gage datum 1,711.41 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1945-10-01 -> 2025-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 6.6 5.2 7.9 130 145 96 53 36 16 12 29 13
2 6.6 5.2 7.8 130 142 91 52 36 16 12 28 13
3 6.5 5.4 8.3 128 134 90 49 38 16 13 27 13
4 6.4 5.6 12 131 129 88 48 41 15 13 25 12
5 6.2 5.8 11 136 125 85 48 39 14 13 24 12
6 6.2 5.7 10 142 124 80 50 37 14 14 23 12
7 6.2 5.5 9.8 196 122 80 53 36 14 14 22 12
8 6.1 5.5 9.9 222 118 78 54 35 13 14 20 12
9 6 5.6 11 226 117 76 54 35 13 14 19 12
10 6 5.7 16 234 117 75 54 37 13 14 18 11
11 6 5.8 31 237 116 75 51 34 13 15 18 11
12 5.9 5.7 32 249 113 73 49 33 14 16 18 10
13 5.8 5.6 34 250 116 73 47 32 17 16 17 10
14 5.7 5.5 43 235 114 73 45 31 17 15 17 10
15 5.6 5.5 60 223 111 73 42 31 17 16 17 9.9
16 5.7 5.5 80 210 108 72 40 31 16 16 16 9.5
17 5.9 5.6 82 197 107 73 40 31 16 17 16 9.2
18 5.9 5.7 81 188 106 72 39 29 16 17 16 9
19 5.8 5.9 80 184 105 71 38 28 16 17 16 8.9
20 5.8 6 81 188 102 70 36 28 16 17 16 8.9
21 5.6 6.1 86 183 99 71 36 26 15 17 15 8.8
22 5.5 6.4 103 180 102 70 35 25 15 17 15 8.7
23 5.5 6.6 106 180 118 68 33 24 15 19 15 8.6
24 5.5 7.2 117 172 118 67 35 22 14 23 15 8.5
25 5.5 7.5 117 164 113 67 36 21 14 24 14 8.5
26 5.5 7.7 120 155 107 64 38 20 15 24 14 8.1
27 5.5 7.8 127 149 101 61 38 19 15 24 14 7.6
28 5.5 8.1 137 148 97 58 44 18 14 24 14 7.3
29 5.3 15 130 146 97 56 40 17 13 26 13 7.1
30 5.3   141 144 95 55 38 17 13 28 13 6.9
31 5.3   132   101   37 17   29   6.7